\documentclass[11pt]{resume}
\usepackage{lipsum}
\usepackage{coverletter}
\begin{document}
\name{Ann\ He}
\basicInfo{
\email{ann@qq.com}
\phone{12335555}
\linkedin{kkfsdk}
}

\clearpage
\recipient{Hello}{One \\ Two \\ Three}
\date{2019}
\opening{Hello World}
\closing{Yours}
\enclosure[Attachment]{My CV}

\makelettertitle

\lipsum[3]

\makeletterclosing
\end{document}